Improvement in butter-tubs



@cited gieten HALE, or eEoJReIA PLAINS, Veratour..`

Letters Patent No. 96,584, dated November 9, 1869; anterlated November 14, 1869.

IMPROVEMENT IN BUTTER-TUBS.

The Schedule referred to in these vLetters Patent and making part of the same.

To all whom it may concern Be it known that I, J. M. HALE, of Georgia Plains, in the county of Franklin, and in the State of Vermont, have invented certain new and useful Improvements in Butter-Tubs; and do hereby declare that the followingr is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

lhe nature of my invention consists in the construction and arrangement of a lwitter-tub, as will be hereinafter fully set forth.

In order to enable others skilled in the art to which my invention appertains, t0 make and use the same,'I will now proceed to describeits construction and operation, referring tothe annexed drawings, which form `a part of this speciieation, and in which- Figure l is a vertical section, and

Figure 2, a side elevation.

My butter-tub consists, in fact, of two tubs, A and A', of the same shape, one-inverted over the other, and securely fastened together, by means of the keycouplings B B, `or their equivalents, so as to compress them together at theirl points of intersection.

There are-several modes of rendering the joint between the sections air-tight, and I do not limit myself to any one in particular. The edges ofthe sections may be provided with a groove in each, which may be filled with packing .of waxed cotton, -so making the joint air-tight. Or one section may be furnished with a lip, and the other with a groove, in their intersecting cireumierences, as shown in iig. 1, so as to mateh together closely when the keys are driven in their places.

The couplings-B B consist of metallic plates u c', placed on the sides ofthe two sections, A A.

.The plate a. is provided with one hook, e, projecting beyond the edge of the tub, in the centre of the plate, while the plate o' has two similar hooks, c e', at such a distance apart that the hook e will iit in between them when the two sections are joined together,

'serted and the hoops set.

said hooks, which firmly secures the two sections together.

The advantages of constructing a butter-tub or firkin in sections .are mainly for convenience of filling and examination. When they are filled with butter, and one placed over the other, it will act as a cover to the package andv exclude the air.

The manner in which I propose to make my buttertub is as follows:

After the tub is turned smooth inside and outside, the creasing-tool cuts a groove, or crease for the headings at the points, Ste. rlhe headings are then in- 'lhe tub is then dividedl while inthe lathe.

Each tub is of theksame size when set up, so that the sections in every pair set up are of the same size, and when coupled together form two tirkins, of the same or different sizes. v By this arrangement, considerable time is saved in setting up the work and finishing itoff, and at the same time firkins of diierent sizes may be manufactured withoutany change in the different parts of the lathe..

This principle will work equally well in the manufacture of pails` and tubs, enabling the workman to finish two articles of the same or different sizes in nearlythe same time it ordinarily takes for one. Having thus fully described myinvention, Vhat'I claim as new, and desire to secure by Letters Patent, is-

The couplings B, constructed as described, having Vhooks or key-seats e, and keys fi, or their equivalents, Afor the purpose of locking the sections of a butter-tub Titnesses H. H. HALE, H. G. EDsoN. 

